2 * Copyright (C) 2009 Apple Inc. All Rights Reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 #include <wtf/PassRefPtr.h>
31 #include <wtf/Platform.h>
32 #include <wtf/RefCounted.h>
35 class ByteArray : public RefCountedBase {
37 unsigned length() const { return m_size; }
39 void set(unsigned index, double value)
43 if (!(value > 0)) // Clamp NaN to 0
47 m_data[index] = static_cast<unsigned char>(value + 0.5);
50 void set(unsigned index, unsigned char value)
54 m_data[index] = value;
57 bool get(unsigned index, unsigned char& result) const
61 result = m_data[index];
65 unsigned char get(unsigned index) const
67 ASSERT(index < m_size);
71 unsigned char* data() { return m_data; }
76 // We allocated with new unsigned char[] in create(),
77 // and then used placement new to construct the object.
79 delete[] reinterpret_cast<unsigned char*>(this);
83 static PassRefPtr<ByteArray> create(size_t size);
86 ByteArray(size_t size)
91 // MSVC can't handle correctly unsized array.
92 // warning C4200: nonstandard extension used : zero-sized array in struct/union
93 // Cannot generate copy-ctor or copy-assignment operator when UDT contains a zero-sized array
94 #if COMPILER(MSVC) && !COMPILER(INTEL)
95 unsigned char m_data[INT_MAX];
97 unsigned char m_data[];
102 using WTF::ByteArray;